/DISPLAY_TYPE=keyword

   Used with /INPUT_ONLY to chose the format in which control characters
   are displayed on the watcher's screen, or in the input-keystroke log
   file.

   CHARACTER   - Displays control-characters as-is.
   DISPLAY     - Displays control characters in a reverse-video character
                 format. 8-bit control characters are displayed in
                 reverse-video and underlined. The Delete character is
                 displayed as a bold, reverse-video lower-case d.
   HEXIDECIMAL - Displays control characters in a reverse video <xx>
                 format.
   PLAIN_HEX   - Displays control characters in <xx> format. (Default).

   A default keyword-value may be specified in the logical
   WATCHER$DISPLAY_TYPE.

   Example:  $ SPY/INPUT_ONLY/DISPLAY_TYPE=DISPLAY J_DOE

   The above command watches process J_DOE but displays only the input
   keystrokes entered at the terminal. Any control characters produced
   by a keystroke are displayed in reverse video on the watcher's screen.

   For more information, see the PEEK Watching Subtopic: /INPUT_ONLY.